1 /* 2 * Copyright (C) 2021 The Dagger Authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package dagger.hilt.android.migration; 18 19 import android.app.Application; 20 import androidx.annotation.NonNull; 21 import dagger.hilt.android.internal.migration.HasCustomInject; 22 import dagger.hilt.internal.Preconditions; 23 24 /** 25 * Utility methods for injecting the application when using {@link CustomInject}. 26 * 27 * @see OptionalInject 28 */ 29 public final class CustomInjection { 30 31 /** Injects the passed in application. */ inject(@onNull Application app)32 public static void inject(@NonNull Application app) { 33 Preconditions.checkNotNull(app); 34 Preconditions.checkArgument( 35 app instanceof HasCustomInject, 36 "'%s' is not a custom inject application. Check that you have annotated" 37 + " the application with both @HiltAndroidApp and @CustomInject.", 38 app.getClass()); 39 ((HasCustomInject) app).customInject(); 40 } 41 CustomInjection()42 private CustomInjection() {} 43 } 44